Features & Benefits
- Complete canister assembly kit including gaskets
- Compatible with Memoirs 4491 & 4492 tank models
- Identify tank model number by looking inside the back wall of the toilet tank
- Features a 3" outlet
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- KOHLER GENUINE PART 87998 Toilet Flush Valve ...
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Item #:
39473958
KOHLER GENUINE PART 87998 Toilet Flush Valve Kit, Corrosion Resistant
Item #:
39473958
€ 41
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What Stands Out
Easy Installation
The Kohler Flush Valve Kit is designed for straightforward installation, making it user-friendly for DIY enthusiasts and homeowners looking to upgrade their toilet system without professional help.
Durable Materials
Crafted from high-quality materials, this flush valve kit offers enhanced durability and long-lasting performance, ensuring reliable operation and reducing the need for frequent replacements.
Water Efficiency
The Kohler Flush Valve Kit promotes water conservation by optimizing flush performance, helping users save on water bills while maintaining effective waste removal compared to standard flush systems.
Product Details
| Exterior Finish | Brass |
| Inlet Connection Type | Barb |
| Outlet Connection Type | Barb |
| Number of Ports | 2 |
| Smart Home Compatibility | Not Smart Home Compatible |
| Thread Type | NPT |
| Connector Type | Barb |
| Thread Size | 1/2 inch NPT (30.5 cm) |
| Valve Type | Globe Valve |
| Item Dimensions | 10 x 4.25 x 3.75 inches (25.4 x 10.8 x 9.5 cm) |
| Outlet Connection Size | 0.5 Inches (1.3 cm) |
| Size | Small |
| Item Weight | 7.04 ounces (199.58 grams) |
| Material Type | Brass |
| Brand Name | Kohler |
| Model Number | 87998 |
| Global Trade Identification Number | 00087206529733 |
| Manufacturer | Kohler |
| UPC | 087206529733 |
| Manufacturer Part Number | 87998 |
| Set Name | Flush Valve Kit |
| Number of Pieces | 1 |
| Item Type Name | Flush Valve Kit |
| Unit Count | 1.0 Count |
| Material | Brass |
| Brand | Kohler |
| Item dimensions L x W x H | 10 x 4.25 x 3.75 inches (25.4 x 10.8 x 9.5 cm) |
| Number of Packs | 1 |
Who Should Buy?
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Homeowners
Ideal for homeowners looking to replace or repair old toilet components efficiently and effectively.
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DIY Enthusiasts
Perfect for do-it-yourselfers who appreciate detailed instructions and engaging in home plumbing projects.
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Plumbing Professionals
Benefits plumbing professionals needing reliable replacement parts that ensure long-lasting performance for their clients.
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Budget Shoppers
May not suit those on a tight budget, as it can be pricier than basic flush valve alternatives.
Product Description
KOHLER GENUINE PART 87998 Toilet Flush Valve Kit, Corrosion Resistant
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What is the KOHLER GENUINE PART 87998 Toilet Flush Valve Kit compatible with?
Answer: The KOHLER GENUINE PART 87998 Toilet Flush Valve Kit is designed to be compatible with various Kohler toilet models, specifically the Gabrielle and Santa Rosa series, among others. This compatibility means that it can effectively replace the existing flush valve in these toilets, ensuring optimal performance and water efficiency. When replacing the flush valve, you can enjoy a more reliable flushing mechanism, reducing the likelihood of leaks and improving overall toilet function. -
Question:
What materials are used in the KOHLER GENUINE PART 87998 Toilet Flush Valve Kit?
Answer: This flush valve kit is made from high-quality materials that are corrosion resistant. The use of robust materials ensures longevity and durability, which is particularly important in bathroom environments where exposure to moisture can lead to wear and tear. By choosing this kit, you can be confident that it will withstand the test of time, providing you with a dependable flushing system that works effectively in your Kohler toilet. -
Question:
How do I install the KOHLER GENUINE PART 87998 Toilet Flush Valve Kit?
Answer: Installing the KOHLER GENUINE PART 87998 Toilet Flush Valve Kit involves a straightforward process. Start by turning off the water supply and emptying the toilet tank. You will then need to remove the old flush valve and replace it with the new one from this kit, ensuring that all seals are tight to prevent leaks. For those unfamiliar with plumbing, a DIY installation can be rewarding, providing both a sense of accomplishment and a functional upgrade to your bathroom fixture. -
Question:
Why should I choose the KOHLER GENUINE PART 87998 over other brands?
Answer: Choosing the KOHLER GENUINE PART 87998 Toilet Flush Valve Kit offers several advantages, primarily because it is a certified authentic part made specifically by Kohler. This guarantees compatibility and quality, which can be lacking in off-brand products. Additionally, Kohler’s commitment to innovative design means that this flush valve not only enhances performance but is also designed with water efficiency in mind, making it an eco-friendly choice for homeowners looking to reduce their water usage. -
Question:
Is the KOHLER GENUINE PART 87998 Toilet Flush Valve Kit suitable for DIY enthusiasts?
Answer: Yes, the KOHLER GENUINE PART 87998 Toilet Flush Valve Kit is perfect for DIY enthusiasts looking to enhance their plumbing skills. With included detailed instructions and simple tools required for installation, it allows you to tackle the remodel of your bathroom without needing a professional. Whether you're making a simple repair or upgrading your toilet for better efficiency, this kit provides an excellent way to learn and gain hands-on experience in home repairs. -
Question:
Can the KOHLER GENUINE PART 87998 Toilet Flush Valve Kit help with toilet leaks?
Answer: Absolutely! The KOHLER GENUINE PART 87998 Toilet Flush Valve Kit is specifically designed to address common issues such as toilet leaks. Over time, aging valves can wear out and cause leaks, leading to water wasting and increased utility bills. By replacing your old flush valve with this new, reliable kit, you can significantly reduce the chances of leaks, thereby conserving water and ensuring efficient toilet operation. -
Question:
What benefits does a corrosion-resistant flush valve kit provide?
Answer: The corrosion-resistant feature of the KOHLER GENUINE PART 87998 Toilet Flush Valve Kit means enhanced durability and longevity, especially in humid bathroom conditions. This type of construction prevents rust and deterioration, which can be common in standard flush valves when exposed to water. Ultimately, a corrosion-resistant kit results in fewer repairs and replacements, providing peace of mind and long-lasting performance in your toilet system. -
Question:
What other Kohler toilet models can the KOHLER GENUINE PART 87998 kit be used with?
Answer: In addition to the Gabrielle and Santa Rosa models, the KOHLER GENUINE PART 87998 Toilet Flush Valve Kit is compatible with several other Kohler toilet lines. This versatility makes it a beneficial choice for various installations, allowing homeowners to confidently upgrade or maintain their current toilets without worrying about compatibility. Always consult the product specifications or your toilet’s manual to ensure compatibility before purchase. -
Question:
What should I do if my toilet continues to run after replacing the flush valve?
Answer: If your toilet continues to run even after you've installed the KOHLER GENUINE PART 87998 Toilet Flush Valve Kit, there may be further issues at play. Common causes include improperly adjusted float heights or other components that may not be compatible. It’s advisable to check the installation instructions carefully or consult a plumbing expert if the problem persists. Addressing these issues promptly can prevent water wastage and ensure your toilet functions correctly. -
Question:
Where can I buy the KOHLER GENUINE PART 87998 Toilet Flush Valve Kit in Ireland?
Answer: You can purchase the KOHLER GENUINE PART 87998 Toilet Flush Valve Kit in Ireland at Ubuy. Ubuy offers a wide range of Kohler products, ensuring that you have access to genuine parts that fit your toilet models. With Ubuy, you can easily browse their selection, find this essential flush valve kit, and make your purchase in a user-friendly online shopping experience.
Kohler Toilet Flush Valves 87998 Editorial Review
This Kohler Genuine Part 1080961 Canister Valve Assembly Kit is a well-regarded product according to customer reviews. The installation process might require some strength to compress the gasket and twist to set the valve, but a lot of customers mentioned successfully installing it with some lubricant. The package comes with bottom seals and other replacement parts. Several customers also shared some tips such as using the Ridgid vacuum extension or a tennis ball for downward pressure, and to avoid using petrolium based lubricant because it can damage the gasket. The product arrived on time and it fits well with the Kohler toilet one piece. However, some customers experienced a missing/broken piece inside the box.
Customer Reviews & Ratings
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Pros
- Well-regarded product
- Comes with replacement parts
- Several tips from customers for easy installation
- Speedy delivery
Cons
- Might require some strength for installation
Platform Trust & Buyer Confidence
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“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
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“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
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“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
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23 July 2026 · via Trustpilot
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€ 41
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